Automatic repeating firearm.



O. H. J. KBAG.

AUTOMATIC REPBATING FIREARM.

APPLICATION FILED AUG. 18,1911. 1,028,032. Patented May 28, 1912.

4 SHEETS-SHEET 1.

O. H. J, KRAG.

AUTOMATIC REPEATING FIREARM.

APPLICATION FILED AUG.18,1911.

1,028,032. Patented y 28, 1912.

4 SHEETS-SHEET 2.

Rhine ooeo O. H. J. KRAG.

AUTOMATIC REPBATING FIREARM.

APPLICATION FILED AUG. 18, 1911.

1,028,032, PatentedMay 28, 912,

4 SHEBTS SHE-ZET S,

wiiueaoco 0. H. J. KRAG.

AUTOMATIC REPEATING FIREARM.

APPLICATION FILED AUG. 18, 1911.

1,028,032. Patented May 28, 1912.

4 SHEETSSHEET 4.

U N l TED STATES PATENT OLE HERMAN JOHANNES me, or ULLERN, NEARCHRISTIANIA, NORWAY.

AUTOMATIC'REPEATING FIREARM.

Specification of Letters Patent.

Patented. May 28,1912.

Application filed August 18, 1911. Serial No. 644,848.

T 0 all 'wizomit may concern:

Be it known that I, OLE HERMAN Jo HANNES Knee, subject of the King ofNor- .way, residing at Ullern, near Christiania, in

the Kingdom of Norway, have invented certain new and useful Improvementsin Auto matic Repeating Firearms; and I do hereby declare the followingto be a full,clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My present invention relates to improvements in automatic repeating firearms, and is especially applicable to repeating pistols of that classwhich can be discharged in rapid succession, as an automatic pistol, orwhich can be operated as a single loader, one hand only being requiredfor controlling either of the operations at will.

This invention is especially intended to provide certain improvementsover the structure as illustrated and described in my U. S. Patent#954,4i1, granted April 12, 1910.

My invention will be understood by reference to the accompanyingdrawings, in which the same parts are designated by the same letters ornumerals throughoutthe several views.

Figure 1 is a side elevation of the complete weapon, parts being brokenaway. Fig. 2 is an end view as seen from'the muzzle of the weapon. Fig.3 shows the opposite side thereof, shownin Fig. '1, with the part of themagazine cover and magazine contents removed, and with the breech blockin therear position. Fig. 4 is a view similar to Fig. 1, but with theside plate of the handle and the magazine removed. Fig. 4? shows adetent for the slide. Fig. 5 is a central vertical section through theWeapon with the'breech block in the rear position, and with the contentsof the magazine chamber removed. Fig. 6 is a sectional elevation showingthe method of removing the barrel; the contents of the magazine chamberare removed also for the sake of clearness in the drawings. Figs. 7, 8,9, 10, and 11 show other methods of engaging the barrel in its "housingand removing it therefrom. Fig. 7 is a detail showing the double leverdetached from the piece. Fig. 12 shows a central section through thebreech block, and the slide to which the breech block is attached. Fig.13 is an end view of the parts shown in Fig. 12 as seen from the of thebarrel as seen from the muzzle. Fig. 15 is a side elevation of thebarrel. Fig. 16 IS an end view of the barrel as seen from the breechblock. Fig. 17 shows the extractor. Fig. 18 shows the firing pin. Fig.19 is a disassembled view of the housing. Fig. 20 is an end View of thedevices shown ir Fig. 19,.as seen from the left. Fig. 21 shows a sectionthrough Fig. 19 alongv the line 21 2l. Fig. 22 is a detachable art ofthe casing. Fig. 23 is a detail showing a plan viewof the finger guard.Fig. 24 shows the magazine with the magazine indicator attached. Fig. 25is a detail showing the magazine indicator in elevation. Fig. 26 showsthe feed spring for feeding the cartridges to the cartridge chamber.Fig. 27 shows the trigger blade in side elevation. Fig. 28 shows thetrigger blade in plan. Fig. 29 is a detail showing the safety springused in connection with the trigger blade. Fig. 30 is a side elevationof the safety late and its pivot. Fig. 31 is a front elevation of thesafety plate and its pivot. Figs. 32 and 33 show the guide rod andcounter recoil spring. Figs. 34 to 38 show different modes of indicatingwhether the barrel is loaded or not, and Fig. 39 shows an auxiliarydevice for preventing the premature firing of the pistol.

A represents the housing in which the various parts are mounted. Brepresents the pistol barrel detachably mounted in said housing.

C represents the breech block made integral with or secured to the slideD, which reciprocates in the housing.

E represents the guard which bears against the forward end of the slideand draws same rearward.

F represents the guide pin mounted in the housing and carrying thereturn spring F.-

G represents the extractor which is carried by the slide.

H represents'a firing pin mounted in the breech block and normally heldin the rearward position by the spring H.

I represents the magazine which contains the cartridges, and also thefeed spring I (see Figs. 24 and 26).'

K represents the index which slides up and down in the magazine case toindicate the number of cartridges remaining therein.

L represents the lock to hold the cartridge magazine in place.

iliary trigger for the thumb. The'trigge r is V normally pressed forwardby the spring M.

N represents the trigger blade pivotedto the trigger, as at n, andcontrolling the fir-V- mg mechanism, as will be hereinafter more fullydescribed- P'represents the safety attachment.

the firingmechanism.

. R represents the hammer;

S representsthe' sear j T represents the stop for holding the slideback. r

U represents an indicator for indicating, whether cartridges are in thebarrel or not.

7 As the main parts, of the'device have just been set forth, I will nowproceed to de scribe the details.

The housing A is normally closed by detachable side lates A, and thecurvedrear Q- represents the spring forming part of plate A, the atterbeing shown in detail in Fig. 22, the former being shown in Fig. 1. Oneof the'sideplates is slotted, as shown in Fig. 1, to permit theinspection of the index which shows the number of cartridges in themagazine. The barrel B' is detachabl-y mounted in the housing, and theslide D is' provided with grooves and engages ribs on the barrel andhousin I The front end of the slide 11 engages the housing and alsoguard E, the head E of,

which ,(see Figs. 6, 19, 20 and 23) is provided with ribs e, engaging inthe groove above the rib Won the bottom of the barrel B, and when theslide D is moved far enough back 'to'permit these ribs'e' to registerwith the break 6 (see Figs. .6 and 15 the barrel may be tilted-up,thelug' thereon rocking under the hook a (see F i 5 and 6), the'notch I)being cleared from t e lug a on thehousing, and the barrel may bewithdrawn from the pistol. The lug b pro-.

jecting from the rear'end ofthe barrel engages in a socket 0 inthebreeoh block C, and prevents the first cartridge from beingaccidentally thrown out before it reaches the cartridge chamber, or theindicator U may also be prolonged to enter the socket and accomplish,the same result.

' The housing A is provided with a chambera (see Figs. 5, 6, and 11), inWhichthe return spring F (Fig. 33) is mounted. This springbearsagainstthe head Dof the slide D (Fig. 12) and the .pin F (Fig. 32)is mounted to slide in the heads D and E (Fig. 6) and to be- 'ressed bythe spring F against the rear wa l of the chamber a". of the housing.The slide D and the guard E are slidably connected to the housin by arib and groove arrangement, such as 18 well known in the art.

The extractor G (see F igs.

is mounted in the slide D, and has its hook g engaging the rim of thecartridge case.

have a" slig a, 17, and 18) This extractor is pivoted as at andQhii s.

a lug g projecting into the'notch h? in thief, 1 i firing'pin H. Thisnotch is somewhat longer? j I e lugg so that thefiringpin; may; I

thant V t longitudinal play. relative {to said lug; but yet is heldsafely in the breechk block by said .lug. The firin pin is shoul-a}dered' as at It, and is provi edwith a proper h, which is normally held'masked'in the breechblock by means of the coil That part of the housingwhich'com i 1 prises the handle;of t-he plstol ;is chain-Q is preferablyslotted, as at 1, tore-1 bered' to receive the magazine I, whichii j 5cows 1 the inwardly projecting flarmr k'" of t" the index K. Theupperarm lc'of said in-.

dex is connected to the lowerarmby thever- 1 tical strip k and saidv up1' armfrests a reed "upward .I

under the cartridges, and is by thefeed springI, which tends to force?the cartridges upward into the loading po-a V Theilowe'r arm is of saidindex (seeFigs. I, 24,*and 25)" registers with the slot in the side Aofthe housing A, andiinsition.

and the position of the index indicatesthat three cartridges are stillinthe magazinebi The magazine is locked in place by 'meansi if of thespring lp'ck L, showniin detail inFig 21, and itis provided with a 2'to. enable it to be pushed down when the'f spring lockL is released.This may done projecting V p by pushing'the-same in. Any convenient formofcatchmay be not claim this as part0 in Fig. 21. I have shownamovableflockiiig release the magazine, when desired. V

g as at m, and is normally pressed'forward by the spring M; r V 1provided andl' do] i r my invention; but f f w v .105 pin L,normally'held in the engaged position by the spring L, which maybepushed in to Mis an auxiliary trigger, whicliflnay-be operated with thethumb from the 'side'of the piece, if desired.- This auxiliary trigger ris pivoted, as at m, to the housing, andis 116 7 provided with aprojecting lug m" (see Fig.1"; 4), and also with an arm m, engagingthetrigger blade 1N which; is pivoted 'asat a i i to the trigger M. Thistrigger blade N has a downwardly projecting arm n,a camface n, engagingthe .cam face a on the housing' A, and has a lug nth'at projects recessin the slide D (see Fig. 4).

P, represents the safety attachment-,whichY with'a thumb .lug p and withtwo lugsonf,

the other face 17 and p If the safety piece;

is pivoted on the arm 1;, and is provided up into a' 't V P be turned sothat the lug engages the arm n of the trigger blade, t e trigger cannotbe moved backw rd and thepieceicanj dicates the number ofcartridgesleftiriithej magazine, figures'being provided fo'rflthisfxf"purpose. In Fig. 1, I have shown the megaf' (1,

zine as arranged to receive six cartridgesgf other hand, if the lug p beturned to engage the under side of the'arm n of the trigger blade, itwill stop the downward movement; the lug N will then prevent the .slideD from bein drawn back. When neither of these lugs is in engagement withthe trigger blade, the piece may be fired automatically.

in rapid succession, described.

Q, represents a spring secured in the housing A (see Fig. 3), and havingarms 9 and the former having a tooth to engage in one of the notches pof the pivot p of the safet piece P, and thus serve as a detent for tesame, while the other arm presses up against the web 12. of the triggerblade N, shown in dotted lines in Fig. 4, and in full lines in Figs. 3,27, and 28.

R represents a hammer, which is pivoted as at r, and is provided with'ahammer pin 1" (see Fig. 5), engaging in the recess 8 in the sear S,which sear is ivoted at s, and the tendency of thesear spring a is toforce the sear down against theweb n of the trigger blade, and to holdthe detent s of the sear in engagement with the notch on the hammer,thus holding the hammer in the cocked position, as shown in Fig. 5. Nowit will be seen that if the trigger blade N be pressed backward, eitherby means of as will be hereinafter the tr1gger M or the auxiliarytrigger M the cam face a will be wedged down by the cam face a (see Fig.4) compressing the arm 9 of'the spring Q, (see Fig. 3), and releasingthe sear (see Fig. '5), causin the hammer to strike the firing pin, theammer moving from the cocked position shown in Fig. 1 to the firingposition shown in Fig. 44.. 1

,T see Figs. 4: and 4*) represents a detent traveling in a slide in thehousing,and havthe breech block and carrier to the barrel ing a lug tadapted to engage the slide, and

' hold the breech in the open position when desired. This detent-isnormally held out of engagement as shown in Fig.4; but is moved upwardto engage the slide when the magazine is empty, being pressed up by themazagine s ring. This detent is shown in detail in Fig. 4?, and thenotch t engages the arm 6 of the guard E, so that this detent can onlybe raised when the guard is in a forward position, and the breech open,and then is automatically raised by the magazine spring holding theslide to the rear.

The index K is used to show the number of cartridges in the magazine;but it is deemed desirable to show whether there is a cartridge in thecartridge chamber, in other words, to know for certain whether the pieceis loaded or not.

For this purpose, I pr0-,

5 and 15, a resilient strip U is secured to the top of the barrel, andis provided with a .lugw, which {projects into the cartridge chamber.hen the cartridge is inserted, this lug uis wedged up slightly, causingthe free end of'the strip U to project above the barrel. Of course, thestrip may be placed at'the side of the barrel, if desired: but this isshown at the topfor the sake of clearness in the drawings, and is morereadily noticed at the top than at the side.

' In the modifications shown in Figs. 34 to 38, Fig. 3i shows aresilient strip U bolted as at u to the barrel, and normally restingfiush along the barrel, but being tripped by a cam plate or hell cranklever V, one edge of which projects into the cartridge chamber when thepiece is not loaded.

In the modification shown in Fig. 35, the strip U is ivoted to thebarrel, as at if, and the spring anormally holds the cam plate V in thelowered position.- When the cartridge is inserted, this cam plate istripped upward, causing the strip U to project above the barrel.

In the modification shown in Fig. 36, the resilient strip U carries thelug u, and is sprung up about its pivot 16 when the cartridge isinserted. The wedge face 10 serves to check the upward movement of thefree end of the strip U The modification shown in Fig. 37 is generallysimilar to that shown in Fig. 35, except that the lug u is substitutedfor the cam plate V.

In the form shown in-Fig; 38, the strip U is pivoted, as at u, to thebreech block, or some part of the slide, instead of to the barrel, andthe lug u'projects into the cartridge chamber except when the cartridgeis inserted.

Itis generally deemed desirable tolock until the bullet has left thebore of the piece,

so that there may not be a blast rearward when the slide flies backunder the action of the pressure of the gases in the cartridge case. rThis is provided for, and at the'same time, it is rendered feasible toreadily remove the barrel by the mechanism which will now be described.

Referring to Figs. 7, 7 8, and 9, W represents a double lever, pivotedas at 20 in the housing, and-having two oppositely disposed arms'w andw. The arms whave cam faces on their upper sides, engaging cam grooves(l in the slide 1), as shown most clearly in Fig. 7, and the arms 1!,"abut against lugs b carried by the barrel.

The parts when the breech is closed and' the piece ready for firing areshown in Fig. 7. Now if the piece be fired, the slide and barrel willboth move to the rear; but for an instant the slide will be retarded bythe double lever W, the cam arms to of which will be camrned down by thecam groove (i on the slide. At't-he time the slide is moving slightly tothe rear, the barrel is also simultaneously moved to the rear by thearms 10 engaging against the lugs Z)" on the barrel, and thus thebarreland slide are held together during the brief interval that the bullet ispassing out of the bore. At the in stant that the bullet passes from thebore, the end of the rib bfbrings up against the-abutment a on thehousing, and arrests the further rearward movement of the barrel. 'hilethe cam arms to of the double lever \V. are clear of the slide, thepartsthenbeing in the position shown in Fig. 8, theslide is free tocontinue its movementrearward under the influence of itsown inertia, butopposed by the return spring'F. On the return stroke, when the breechblock strikes the breech end of the barreh its inertia will push thebarrel forward slightly to the original position shown in Fig. 7.

\Vhen the parts are in the position shown in Fig. 8, if it be desired toremove the barrel. it .will be sutiicient to draw the guard backwarduntil the head D of the slide, and the ribs 0 of the guard, registerwith the break 6" in the ribs Z) on the barrel, when the barrel may betilted up, as shown in Figs. 6 and,),' and may be drawn forward andupward out of the slide and housing.

Instead of using the double lever W, as

shown in Fig. 8, the barrel and slide may be locked together andreleased from each other as shown in Figs. 10 and '11. In Fig. 10, thebarrel andslide are shown in the forward position, to which they wouldnormally be brought by the return spring. Now if the piece be fired, thebarrel and slide would both recoil together until the rib b on thebarrel struck the abutment a on the housing. After this, the inclinedface o on the breech" block will wedge down on the inclined face Z) onthe barrel, tilting the breech of the barrel down slightly, andpermitting the slide to continue its rearward travel, as shown in Fig.11. If the slide be held to the rear, and the parts D and E be broughtinto the position to be disconnected from the rib b on the barrel (seeFig. 6), the barrel may be still further tilted up and removed from theslide and housing. It

will 'be obvious that when the slide returns nearly to the initialforward position, the breech block will strike the breech of the barreland tilt the same forward slightly; while. at the same time, the camface 6" of the barrel will swing up behind the cam face 0 of the breechblock, and the parts will be in the position shown in Fig. 10.

With any pistol it is eminently desirable to prevent accidentaldischarge of the piece,

and it is especially desirable with automatic down the detent t, whenthe. fresh -'mag"azin cession of shots and distributed in variousdirections.

According to this device the.

trigger M is notched, as at 1, to engage the detent arm 2 of. the bellcrank lever X, p t-f oted to the handle as at 3, having a dow'ng" wardlyprojecting finger grip. 4. andfanup-H wardly pro'ecting arm 5 engagingthestri ger spring 2 in engagement with the notch 1, and if the triggerM'be pulled in abackward direction,

7 Now, if

it will be arrested by the detent 2. V V at the same time. the triggeris .p'ulledb'acks ward, or prior thereto, the ting r grip .4 is

also pulled backward, thedetent 2:. will clear the notch .1', and thetrig'gercan, be

moved backward against the action of its spring M,'as shown in dottedllnes in Fig.

39. Should the trigger and the'bellfcrank lever be released,'the springM will restore the parts to the safety position. It willbe' obvious thatholding the trigger M inplace will also lock the trigger-blade N andtheparts operated thereby. It will be seen that a safety attachment isprovided which does.

not require inspect-ion, and which may-be controlled in the dark,-and atall times, 7

without requiring any special intelligence.

The operation of the device is as follows Draw back on the guard E,which will draw back the slide D, thus. opening the breech, the partsthen'beingin the position shown in Fig. 5. It will be. noted that thelower part of the breech block C'will engagev the V1100 face of thehammer R, and will cock..- the piece, causing the detent s to engage inthe, 7' notch on the hammer; Now insert a can tridge, or insert themagazine, if desired, and release the guard, the spring .,F willv forcethe slide, and with it the guard, to the initial position shown in Fig.1; and in the. 5

meantime, the cartridge will be forced into the cartridgechamber, asshown in Fig: 1.] Now if it be desired to fire'in rapid succes sion, themagazine being in place and;

charged, and the safety device being'in-tlie' I is proper position, itwill 'besuflicient topull on the trigger M or the trigger M, and the V.hammer will be tripped, as will be herein; Z

after described, and the cartridge will fired. The pressurei of thegases'in the cars tridge chamberwill force the breechblock backwardagainst the operation of the' spring F, when another cartridge willbeautomatically inserted, and the-"spring; F

will normally restorethe partsto the posi-E" j tion shown in Fig. 1, andthe second car tridge will be .fired, theslide continuing to reciprocateand to fire the cartridges seriatz'm until the'magazine is exhausted. 7Then, the magazine'is exhausted, the magazine push the .detent T up toengage spring will in the slide, and hold the same open, and the 7 piececannot be firedw'In' order 'to that the from the slide, In order to actas a single firer, it will only be necessary'to draw the slideback bythe guard E and the piece can gers M or M will cause the trigger blade,

be charged singly by hand.

- The operation of the firing mechanism is as follows :-Pulling oneither of the trig- N'to move backward slightly, and the cam :-..-faceif, engagin the cam face a, will also downward slightly. This slightdownward movement will cause the arm 12 of the trigger blade (see Figs.5, 27, and 28) to wedge 7 actwhenever the breech reached its closedposition, the hammer at that time passmg clear of the lower edge 0? ofthe breech block C.

The two arms 6 and e of the guard E not only serve to steady the guard,but the one serves to operate the detent T, and the other, on theopposite side, is provided with a web 6, which brings up against the ribof the person forward a of the housing, and thus prevents the guard frombeing thrown out of place when it is carried rapidly forward under theaction of the spring F. It will be noted that this guard pulls'back theslide, and is returned to the initial position with the slide,

' under the action of the spring F; but when it has returned to theinitial position, it does not interfere any way with the vibratorymotion of the slide.

In order to prevent the guard from rebounding, and ossibly injuring thefinger ring the pistol, there is a short notch e? in the lower side ofthe arm 6 which brings up against the abutment a on the handle, the saidarm e being normally clear of the trigger when it is in its osition, butpressing same down and causlng this notch e to engage said abutment awhen the trigger is drawnbackward to the firing position. Thus it willbe seen that the guard E cannot be moved back from the forward positionso long as the trigger is held back.

Having thus described my invention, what 'cause'the heel o the triggerblade to move I claim and desire to secure by Letters Patent in theUnited States is V a 1. In an automatic pistol, the combination with ahousing, of a slide mounted to move longitudinally on said housing, andprovided with a T-shaped groove, a barrel provided with T-shaped ribsslotted along a portion of their length, adapted to engage said T-shapedgroove in the slide, and to be predetermined position when said slide isdrawn rearward, withv means controlled by said slide for normallylockingv the barrel .on the housing, substantially as described.

'2, In an automatic'pistol, the -combination with a housing, of a slidemounted to move; longitudinally on said housing, and ,provided with aT-shaped groove, a barrel provided with T-shaped ribs slotted along aportion oftheir length, adapted to engage said T-shaped groove in theslide, and to be released from engagement therewith at a predeterminedposition when said slide is drawn rearward, a guard sliding in saidhousing in front of said slide, and provided with a T-shaped grooveengaging the ribs of the barrel, and a return spring normally pressingsaid slide and said guard forward relative to said housing,substantially as described.

3. In an automatic pistol, the combination with a housing, of a barrel,a slide carrying the breech block, detachably connected with saidhousing, a sliding guard also detachably connected to,said housing, andprojecting in front of said slide, the said slide and guard normallylocking said barrel in said housing, andmeans operable by i moving saidguard and slide longitudinally for releasin said barrel from engagementwith'said slide and guard, thereby permitting the tilting of the barreland the withdrawal of the same, substantially as described. p 1

i. In an automatic pistol, the combination with a housing, of a slidemounted to move longitudinally on said housing, and provided with aT-shaped groove-,a barrel having a limited longitudinal play in saidreleased from engagement therewith at "a llO housing, and provided withT-shaped ribsi slotted along a portion of their length, adapted toengage said. T-shaped groove in the slide, and to be released fromengage .ment therewith at a predetermined position when said slide isdrawn rearward, means for locking the slide and barrel together duringthe rearward movement of said bar rel, and for detaching the slide fromthe barrel thereafter, and means controlled by said slide for normallylocking the barrel in the housing, substantially as described.

5. In an automatic pistol, the combination with a housing, of aslidemounted to move longitudinally on said housing, and prowith vided with aT-shapedgroove,,a barrel haw ing a limited longitudinal 'play in' saidhousa I ing, and provided with T-shaped ribs slotted along a portion oftheir length, adapted to engage said T'-shaped groove in the slide,

vided with a T-shaped groove engaging the ribs of the barrel, means forlocking the slide and barrel together during the rear ward movement ofsaid barrel, and for de-,

taching the slide from the barrel thereafter,

and a return spring normally pressing said slide and said guard forwardrelative to said housing, substantially as described.

6. In an automatic pistol, the combination longitudinal play on saidhousing, a slide carrying the breech block, detachably connectedwith'said housing, a sliding guard also detachably connected to said"housing,

and projecting in front of said slide, the said slide and guard normallylocking said barslide and barrel together during the rearwvard movementof said barrel, and for detaching the slide from the barrel thereafter,and means operable by moving said guard and slide longitudinally forreleasing said barrel from engagement with said slide and guard,therebypermitting the tilting of the barrel and the withdrawal of the same,substantially as described.

7.: In an automatic pistol, the combination with a housing, of a barreland a ribbed slide mounted thereon, means for detachably connecting saidbarrel to said housing, slot-ted ribs on said barrel, areturn springmounted in said housing, a guard engaging said slide and provided withribs engaging the ribs on said barrel, the said ribs on the guard andslide being adapted to register with the slots in the ribs on the barrelwhen the guard and slide are drawn rearwardthe said guard sliding insaid housing and being normally held in the forward position 7 by'saidspring, whereby the'barrel may be held normally locked on said housing,but may be tilted up and-removed therefrom 'when said guard is drawnbackward, substantially as described.

8. In an automatic pistol, thecombination with a housing, of a slidemounted to move longitudinally on said housing, a barrel mountedin saidslide and housing, a

guard sliding in said housing and having its head projecting in front ofsaid slide,

the said guard having two rearwardly pros jecting arms engaging in saidhousing on opposite sides of the magazine chamber, and a return springnormally pressing said slide and said guard .forward relative to saidhousing, substantially as described.

a housing, of a barrel having a limited rying the breach block 9.'In anautomaticpistol, the: combinw 7 tion with a housing, of afslidemountedtomove longitudinally onvsaid h0usin'g,ia:bar V rel mounted insaid slideand .:housing,oe av guard sliding insaid housing and having its headprojecting in front of said"slide,-o-the1 said guard having tworearwardly project;

ing arms' engagingrin said housing on ops posite sides of the magazinechamber, one of saidarms traveling in a slot insaidhousingaj and havingan enlargedhead engaging" in a groove in the housing, thus .act'ingwasav stop for the forward movement of said.

guard, substantially'as. described. -1 3 10. In an automatic pistol, thecombine;

guard sliding in :said housing and having its head projecting in frontof saidslide, the

ing arms engaging insaid housing. onopposite sides of the magazinechamber, oneof saidguard having two rarwardljproject .7

said arms being notched to engage a 'detent .onsaid housing when presseddownward;- and a trigger pivoted to said housing and j adapted to engagesaid arm when pressed downward, whereby the rearward motion of saidguard is scribed. v

11. In an automatic pistol, the combine prevented, substantially asdetion with a housing, of a slide mountedto i move longitudinally onsaid housing, abarrel mounted in said slide and housing, a} guardsliding in said housing and having its ,7 C head projecting in front ofsaid slide,'the

said guard having two rearwardly projects ing arms engaging in saidhousing on opposite sides of the magazine'chamber, one of said armsbeing notched to engage a detent on said housing when pressed downward,and atrigger pivoted to said-housing,

and adapted 'to engage said; arm when" pressed downward, whereby therearward motion of said guard is prevented, the other; of sald armstraveling in a slot in said 1101.157}

ing and having a headengaging the end of 1 said slot when the guardfisin the forward position, substantially as described-.

12. In an automatic pistol, the. combina*- tion with a housing, ofvaslide mounted to" move longitudinally on said housing, a'ibarf;

rel having limited longitudinal; motion-in said housing with slidingconnectionrb ee J tween said barrel and said slide, and means forlocking said barrel to said slide during the limited longitudinalrearward movement of said barrel, and automatically releasing saidbarrel from said slide after such longi tudinal movement of the barrelis arrested, substantially as described. 7 13. In an automatic"pistol,the combina-l tion with a housing, of a barrel having liin itedlongitudinal motion therein, a slide cared with said housing, a slidingguard also detachably connected to said housing, and projecting in frontof said slide, the said slide and guard normally locking said barrel insaid housing, and means for locking said barrel during its limitedrearward motion, to said slide, and then automatically releas ing ittherefrom, substantially as described.

lei. In an automatic pistol, the combination with a housing, of abarrel, a slide carrying the breech block, detachably connected withsaid housing, a sliding guard also detachably connected to said housing,and projecting in front of said slide, the said slide and guard normallylockingsaid barrel in said housing, a trigger, and means. controlled bythe'movement of said trigger for locking said guard against rearwardmovement, substantially as described.

15. In an automatic pistol, the combination with a housing, of a barrel,a slide carrying the breech block, detachably connected with saidhousing, a sliding guard also detachably connected to said housing, andprojecting in front of said slide, the said slide and guard normallylocking said barrel in said housing, a trigger, and means controlled bythe movement of said trigger for locking said guard against rearwardmovement,said means comprising a notched arm projecting rearward fromsaid guard in line with the rearward movement of the trigger, and adetent in said housing adapted to engage said arm when pressed down bysaid trigger, substantially as described.

16. An indicator'for use with magazine fire arms, comprising a resilientsliding member K, having an arm' is movable exterior to the magazine, aninwardly projecting arm if projecting into the magazine, a verticalstrip k and a cross arm 7: engaging the top of the feed spring,substantially as described.

17. In a safety attachment for small arms, the combination with atrigger provided with a notch and a spring engaging'said trigger, of athree-arm lever having one arm serving as a detent to engage said notch,a second arm normally engaging said spring and tending to keep said,detent in engagement with said notch, and a third arm adapt ed to bepressed by the finger simultanestantially as described.

18. In fire arms, the combination with a trigger, a spring normallypressing said trigger to the forward position, a detent also engagingsaid spring the latter normally holding said detent and said triggerengaged, and means for releasing said detent simultaneously with thepulling of said trigger, substantially as described.

'19. In an automatic fire arm, the combination with a housing and areciprocating slide mounted therein, of a magazine mounted in easilywith the pulling of said trigger, subthe housing, a feed spring mountedin said magazine, and a sliding, detent mounted in the housing,wit-htmeans actuated by said feed spring for pressingsaid detentupwardin the path of the slide when the'magazine is empty, the said detentbeing provided with a cam slot, and a sliding guard connected to thehousing, having an arm projecting into said cam slot and withdrawingsaid detent from engagement with said slide when said guard is drawn tothe rear, substantially as described.

20. In an automatic fire arm, the combination with a housing and a slidereciprocat ing therein, of the trigger pivoted to said housing andnormally pressed forward by a spring, a trigger plate pivoted to saidtrigger and provided with a rearwardly and upwardlyextending heel, saidheel having a cam face adapted to engage a corresponding cam face on thehousing and having a cam lug projecting up intoa recess in the slide, apivoted safety attachment adapted to hold the heel of said trigger platein a locked position or to release same when de-' sired, and a springserving as a detentfor said safety device and as ayielding support forthe heel of said trigger plate, substantially as described.

21. In an automatic fire arm the combination with a housing and a slidereciprocating therein, of the trigger pivoted to said housing andnormally pressed forward by a spring, a trigger blade pivoted to saidtrig ger and provided with a rearwardly and upwardly extending heel,said heel having a cam face adapted to engage a corresponding camface onthe housing and having a cam lug projecting up into a recess in theslide, a pivotedsafety attachment adapted to hold 5 the heel of saidtrigger blade in a lockedposition or to release same when desired, and aspring servingas a detent for said safety device and as a yieldingsupport forthe heel of said trigger blade, with an auxiliary 110triggerprojecting laterally from the side of the barrel and operable bythe thumb for operatin said trigger blade, substantially as describe 22.In an automatic fire arm, the combina-' 115 tion with a housing and aslide reciprocating therein, of the trigger pivoted to said housing andnormally pressed forward by a spring, a trigger blade pivoted to saidtrigger anil provided with a. rearwardly and updetent engagingthetrigg'er '5' ring andInormally. locking the trigger an trigger bladeexcept when sai finger operated detent; and trigger are pressedbackward, substantially as described.

23. Inr'an automatic fire arm, the combi nation with ahousing and aslide reciproeating therein, of the trigger pivoted to said housing andnormally pressed forward by a spring, a trigger blade pivoted to saidtrigger and provided with a rearwardly and upwardly extending heel, saidheel having a cam face adapted to engage a cor:

responding cam face on the housing and having a cam lug project-ingnpinto a recating therein, of the trigger pivoted to said housing andnormallyw pressed forward by a spring, a trigger blade pivoted to said fas trigger and provided with. a rearwardly and upwardly extending heel,said heel having a cam faceadapted to engage a corresponding cam face onthe housing andhaving a cam lug projecting up into a recess, a springserving as'a yielding sup rt for the heel of said trigger blade, an anauxiliary tri ger projecting laterally fromthe side of the barrel andoperable bythe thumb for operating said trigger blade, substantially asdescribed. V

25. In an automatic fire arm, the combination with a housing and a slidereciprocating therein, of the trigger pivoted to said housing andnormally pressed 7 forward by r a, spring,

a trigger blade pivoted to said trigger and 40 providcdfvvitl a.rearwardly and upwardly extending hee said heel having a cam faceadapted to engage a corresponding cam face on the housing and hav ng acam lug pro ejecting up Into a-recess in the slide, a spring serving asa yieldin support for the heel of said trigger bla e, and a'efingeroper-a ated detent engaging the trigger-spring andn normally locking thetrigger 'and trigger asta-ntially a; escribed.

blade except when saidifinger oprvrated de tent and trig er are pressedbac ard,sub- 26. In automatic fire arm, the combination with-a hous ngand a slide reciproe cat-ing therein,- of the trigger-p voted to saidhousing" and .normally.* ressed forward by a spring, a trigger b adepivoted to said trigger and provided with a rear- 7 wardly and upwardlyextending heel, said helhaving a cam face adapted to engage acorresponding cam face on the housing and having a cam lug projecting upinto a-recess'in the slide, a hammer having a notch on its heel, ahammer rod, a hammer spring trigger and provi ed with a rearwardljg ingcam-face on'the, housingand hav n 1 having a notch on I its heel, ahammer; rod

rod, a pivoted sear; .having a adetent :no

- and release saidfdetent when said t'rgfi mounted on said hammer rod,a: pivoted I sear having a detent normally engaging ll said notch underthe action of saidhaminen spring, and an arm; on said trig rblgde Qadapted to move said sear, and refdasesiid-T. detent when said triggerblade is operated, and a spring forming a. yi ding support 1 for theheel of said trigger blade, substantially as described. 9 a 27. In anautomatic fireman, the combine-, 1' tion with ahousingand a slidereciprocating, i therein, of thetrigger'pivoted to said hone-i ing andnormally pressed forward any: spring, a trigger: blade;pivotedjtofisaidg; trigger and providedvwith a rearwardly -iandsi fupwardly extendingheehsaid V a. cam face adapted to engage a 4. ing camface onthe housing'and having'jag cam lu V rojectin intoarecess as rm fV gp a P serving as a ;yiel ing zsupport forrthejh of said, triggerblade, a hammer *having'gal hammer spring, and an arm on said-tri bladeadapted to move said sear, andree;ase-: said detent when saidtrig'gerblade; is l'opeff; ated, and an auxiliary trigger project laterally fromthe side. of the barrelian operable by the thumbgfor operatin 'd triggerblade, substantially as ,descri 7 28. I In an ;automatic" fire harm,thetconibi nation with 'a housing andaslideareci r6 eating therein,offthe trigger. pivot said housing and normally pressed forward by a,spring,1 a tri ger bladapivotedto g upwardly ef' h li d heel he. i e acam ace adapted ,to, eng g col-Swag a pr serum0 as *aayiel'din gs e thea he f -saiii trigger and, a

'a hammer-spring mounted on saidhamin er ye a 1 ne eht nde h acti h ofsaid hammerspring,- and anQar'm' on said trigger bladdfadapt to" moven-saidl sear, i J blade is' operated, 'andfa finger operate "111tentengaging the trigger spring and non- 1; mally lockingt'he triggerand'tri gerjbla'de except when said fin er operated etent'andf triggerare pressed ackward, subtantiallyl j as described" a "112! Intestimonylwhereof, I aflixg myisignature, in presence offltwo witnesses,p r '1 1 I OLE HERMAN JOHANNESV KR AG. Witnessesr v r H.T.1\!ICI{EEVER,'

D. LEWIS Mamas.

